Tire forming device



Aug. 8, 1933. OTTO 1,921,579

TIRE FORMING DEVICE Filed Sept. 26, 1930 INVENTOR. flLfiE/ff 0770 ATTOR YS.

Patented Aug. 8, 1933 I UNITED STATES. P E e es};

- TIRE FORMING DEVICE Albert Otto, Grosse Pointe' Park, Mich., assignor to Morgan & Wright Detroit; Mich., a Corporation of Michigan Application September 26, 1930 I H Serial No. 484,491

' ,6 claims, (01. 154-9) My invention relates to tire forming devices, into a tire. The edges of the drum 1 are proand more particularly to apparatus for applying vided with inwardly extending shoulders 3 for beads to plies of fabric and rubber while on a, the reception of the bead rings. It is to be un-- revolving shaper, a derstood that a tire buildingcore may be substi- 5 A common form of apparatus for applying bead tuted for the drum 1', if desired. The drum 1 is wires to partially shaped tires is a ring, turned mounted on a shaft 4 which extends into a hous-' down on its outer periphery along the edge facing ing 5 fora driving motor, not shown. A control the tire material so as to form a shoulder upon switch 6 for the motor is mounted on the housing which a bead wire is placed. Ordinarily the 5. Treadles' 7 and 8 are provided for controlling shoulder so formed is narrower than the width the rotation of the drum by the foot of an operor diameter, of the bead wire which is carried ator. thereon. The resultant overhang of the bead wire A bead mounting device" for applying bead is necessary in order to insure the proper conrings 9 of wire'and enclosing fabric comprises tact between the bead wire and the fabric of the a pair of rotatable hubs 10 and 11 which are tire carcass when it is desired to transfer the co-axially mounted with respectto the drum 1. bead wire to the fabric. The positioning of a The hub 10 is-moved longitudinally of the shaft bead wire upon such a narrow shoulder has re- 4 by a standard 12. The hub .10 is preferably quired the exercise of considerable care on the freely rotatable relative to the shaft 4 which expart of an operator. 1 tends therethrough. Thestandard 12 is secured I provide a bead mounting device in which a to a cylinder 14 and is 'slid ably supported by b ad supp s u d is rm d y a e guiderods 15 extending through bosses 16 at its. Of a annular against which the bead W base. The guide rods 15 extend betweena clampbears and an internal relatively movable ring in br k i; 17 nd th housing 5, wh h n a s th inner p p a Surface The hub'll is supportedbya standard 18 which, h be r The W d of the p j i p also is slidable along the rods 15; A piston 19 t o o t e inner ova g ay be substantialentering the cylinder. 14 is connected to the standy eq a to t e Widt 0 diameter of the d ring ard 18 so that upon the admission of fluid under so that the bead ringis easily mounted thereon. pressure t t cylinder 14 the standards.may 30 W i is desireq to apply the a rlng to be drawn towards or away from each other for a tire carcass, the run and ring are slmultanebringing t rings against the ously advanced toward a revolving tire shaping for removing them from engagement t t drum or core. Upon the engagement Q the ring drum. The admission of fluid under pressure with either the drum febrlc earned ev to the cylinder 14 is controlled by a valve 20 which by, the ring moves axially relative to the rim. is connected to a Supply line gland to the 35 against spring pressure. Meanwhile the rim conposit; ends ofthe cylinder by pipe lines tinues'to advance to cause the transfer of the and 24.

bead ring to the tire e P the W As the details of the hubs 10 and 11 and the drawal of the bead mounting device the ring 15 elements carried thereby are similar, except that m plToJected outwardly of the mm for recepthey are both mounted to face the drum 1, a demon of a new bead ringtailed description of one only is given. i The accompanymg.drawmg musti'ates Referring to Figs. 2 and 3, the hub 10 termiem preferred embodunent 9 the mventmn m nates in an annular channel 25 to which a rim which Figure 1 is a perspective view of a tire shaping 26 of L .Shape sepured by Screws Ihe leg of the mm which is parallel to the axis of the mechanism embodying the bead mounting deh t t d th d 1 th t 100. vice of the present invention; uh lrec ed 8 t so outer end 28 may engage the side of a bead ring tir e sha pi l ig di'fl fi s h wir l g the tegg gfim ting 9. A ring 29 is mounted internally of the mm 26 and is supported by pins 30 projecting from the device in its inactive position; and 50 3 is a View f the parts shown in Fig. 2 vertical walls of the mm 26. Springs 31 are dlsduring a bead tra f rri operation posed about the pins 30 and abut the vertical Referring to the drawing a collapsible rotatable Walls of the rim 26 and the ring te pi s drum 1 is provided for supporting and shapin 32 are inserted in the pins 30 for retaining the plurality of fabric and rubber plies 2 into the form ing 29 i p W l 2 nd 3 S ow the of a pulley band which is subsequently shaped details of but one pin'and spring it is to be understood that a suitable number of such assemblies are applied about the periphery of the ring 29.

The outer edge of the ring 29 is cut away to provide a peripheral shoulder 34. The bead ring 9 is supported on the shoulder 34 and bears against the end 28 of the rim when the bead rnountin device is inan inactive position. The outer edge of the ring 29 may be provided with notches 35 for the convenience of the operator in mounting the bead ring.-

When it is desired to apply bead rings to the drum 1, the operator manipulates the valve 20 to cause fluid to traverse the pipe line 24 and enter the cylinder 14. Relative movement between the cylinder 14 and the piston rod 19 causes the standards 14 and 18 to approach'each other and the drum 1.

When the forward edge of the ring 29 engages the fabric 2 on the drum 1, as shown in Fig. 3, the ring moves axially of the hub against the compression of the several springs 31. However, the edge 28 of the rim 26 continues to advance to press the bead ring 9 against the fabric 2.

During this transfer the hubs 10 and 11 rotate with the drum 1. The operatonby the assist nce of suitable tocls, transfers the bead rings 9 'to the drum. The relative movement between each rim 26 and ring 29 provides the necessary overhang of the bead ring associated therewith to provide the desired contact between the fabric 2 and the bead ring 9.

,After the bead rings carried by the hubs 10 rim 26 by the expansion of the springs 31. Seats for subsequent bead rings are provided by the shoulders 3.4 and edges 28.

While I have shown and described a present preferred embodiment of my invention, it is to claim and desire to protect by Letters Patent is:

1. A bead mounting device comprising a member iorengaging theside of a beadring' and a relatively movable supporting element for engaging the inner periphery of the bead ring, and

The

resilient means connecting said bead ring engaging member and supporting element.

2. A bead mounting device comprising a member for engaging the side of a bead ring and a relatively movable supporting element projecting beyond said member for engaging the inner periphery of the bead ring, and spaced recesses around the projecting portion of said supporting element for facilitating the application of a bead ring to said device.

3. A bead mounting device comprising a member for engaging the side of a bead ring and a relatively movable supporting element for engaging the inner periphery of the bead ring, annular flangesoarried by said bead ring engaging member and supporting element said flanges being spaced from each other, and resilient means mounted between said flanges for maintaining said bead ring engaging member and supporting element in normal bead supporting relation.

4. A tire building apparatus comprising in combination a flat band building drum having'an in clined peripheral flange at one end, and a bead mounting device adapted to contact said flange comprising a member for engaging aside of a bead 1 ring and'a relativelymovable member for engaging the inner periphery of the ring. a

5. A tire building apparatus comprising in combination a flat-band building drum having an inclined peripheral flange at one end, a head 1 mounting device comprising a member for engaging a side of a bead ring and a relatively movable supporting element for engaging the inner periphery of the bead ring, said supporting element being adapted to be pushed out ofengagement 1 with the inner periphery of the bead ring by contact with the said inclined flange of the building drum.

6. In a tire building machine, a tire building core having peripheral shoulders at opposite e nds 1 thereof upon which the'bead ring receiving portions of a tire casing are formed, a supporting member having an annular bear ring seat mounted coaxially with the core; and movable axially toward and away from an end-of the core, an an- 1 nular pressure applying member engageable with the outer side of a bead ring on said seat, means for moving said. supporting. member axially to" position the bead ring against the portion of; a tire casing overlyinga shoulder of the core and 1 for actuating said pressure applying, member to press the bead ring against the shoulder of the ALBERT o'r'ro. 1 

